People gather to pray in baggage claim during a protest against the travel ban imposed by U.S. President Donald Trump's executive order, at Dallas/Fort Worth International Airport in Dallas, Texas, January 29, 2017.
(REUTERS/Laura Buckman)
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Survivors walk in the former Nazi German concentration and extermination camp Auschwitz-Birkenau in Oswiecim, Poland January 27, 2017, to mark the 72nd anniversary of the liberation of the camp by Soviet troops and to remember the victims of the Holocaust. Agency Gazeta/Kuba Ociepa/via REUTERS #

A man takes a photograph of his friend as thick smoke rises from a fire, which broke out at oil wells set ablaze by Islamic State militants before they fled the oil-producing region of Qayyara, Iraq, January 28,2017.
(REUTERS/Muhammad Hamed)
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A performer smokes as he waits for his turn to go onto stage at the Longtan park as the Chinese Lunar New Year, which welcomes the Year of the Rooster, is celebrated in Beijing, China January 29, 2017.
(REUTERS/Damir Sagolj)
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Mata, 23, who's from Nigeria, tries to recover after fainting during a rescue operation of 104 sub-Saharan migrants aboard a raft by the Spanish NGO Proactiva Open Arms, in the central Mediterranean Sea, 24 miles north of the Libyan coastal city of Sabratha, January 27, 2017.
(REUTERS/Giorgos Moutafis)
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Israeli policemen remove a pro-settlement activist during an operation by Israeli forces to evict settlers from the illegal outpost of Amona in the occupied West Bank February 1, 2017.
(REUTERS/Baz Ratner)
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Francois Fillon, former French prime minister, member of The Republicans political party and 2017 presidential candidate of the French centre-right, attends a political rally in Charleville-Mezieres, France, February 2, 2017.
(REUTERS/Christian Hartmann)
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